C / C++ / MFC

7-May-09 21:20

hi all

I am writing a application in which i use the stl list. through this list i m able to inserting the items but not able to remove the item from specific position. this is my class
class ClipEntry
{
public:
//CoInitialize(NULL);
ClipEntry();
ClipEntry(const ClipEntry& r);
~ClipEntry();
const ClipEntry& operator=(const ClipEntry& r);
bool operator == (const ClipEntry& r);

private:

IGraphBuilder *m_pGraph;
IUnknown *m_pSinkFilter;
string m_strName;
REFERENCE_TIME m_tOffset;
REFERENCE_TIME m_tStart;
REFERENCE_TIME m_tStop;

// rewound ready to re-use
bool m_bPrimed;
};

I am inserting the items like this
HRESULT ClipPlayer::AddClip(char* path, ClipEntry** ppClip)
{
list<ClipEntry>::iterator it;
it = m_Clips.insert(m_Clips.end(), ClipEntry());
ClipEntry *pClip = &(*it);
*ppClip = pClip;
.........
}

but when i write the remove function like this

void ClipPlayer::RemoveClip(ClipEntry *pClip)
{

m_Clips.erase(&pClip);
// find(m_Clips.begin(),m_Clips.end(),pClip);

}

i am getting error
Could not find a match for 'list<ClipEntry,allocator<ClipEntry> >::erase(ClipEntry * *)'

how i solve this problem Confused | :confused:

Roger Stoltz7-May-09 21:47

Roger Stoltz

7-May-09 21:47

raj1576 wrote:
list<ClipEntry>::iterator it;
...
void ClipPlayer::RemoveClip(ClipEntry *pClip)
{

m_Clips.erase(&pClip);
i am getting error
Could not find a match for 'list<ClipEntry,allocator<ClipEntry> >::erase(ClipEntry * *)'

It seems like you're mixing up what type you're storing in the list...
You don't include the declaration for the m_Clips member variable.
Does it store ClipEntry or ClipEntry*?

The compiler error a probably caused by the fact that std::list::erase()
expects an iterator as argument and not a pointer to an element in the list.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

raj15767-May-09 22:48

7-May-09 22:48

so how i pass this argumet in the erase()?

i am getting the whole value of the list in the ClipEntry *pClip which i want to remove.

RemoveClip(ClipEntry *pClip)

Roger Stoltz7-May-09 23:04

Roger Stoltz

7-May-09 23:04

As Stuart said, std::list::remove is the function you should use as it expects a reference to an instance of the type controlled by the container.
In code it should look something like this:

std::list<ClipEntry*> m_Clips;
....
void ClipPlayer::RemoveClip( ClipEntry* pClip )
{
    m_Clips.remove( pClip );
}

Is your m_Clips really declared as above? I.e., does it store pointers to ClipEntrys?
If it does, you shouldn't need to write a comparison operator for ClipEntry since std::list::remove() would simply compare the pointers in order to find a match. (Referring to you ongoing discussion with Stuart.)

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

raj15767-May-09 23:11

7-May-09 23:11

thanks Roger Stoltz for reply
now problem is solved

Stuart Dootson7-May-09 22:16

Stuart Dootson

7-May-09 22:16

You want std::list::remove, not std::list::erase.

m_Clips.remove(*pClip);

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

raj15767-May-09 22:44

7-May-09 22:44

when i use m_Clips.remove(*pClip);

then i got error
'operator==' not implemented in type 'ClipEntry' for arguments of the same type

while i already implement the operator== like this

bool ClipEntry::operator ==(const ClipEntry &r)
{

if(m_tOffset != r.m_tOffset) return 0;
if(m_pGraph != r.m_pGraph) return 0;
if(m_pSinkFilter != r.m_pSinkFilter) return 0;
if(m_strName != r.m_strName) return 0;
if(m_tStart !=r.m_tStart) return 0;
if(m_tStop != r.m_tStop) return 0;
if(m_bPrimed != r.m_bPrimed) return 0;
return 1;
}

then what should i do for this

Stuart Dootson7-May-09 22:55

Stuart Dootson

7-May-09 22:55

bool ClipEntry::operator ==(const ClipEntry &r)

should be

bool ClipEntry::operator ==(const ClipEntry &r) const

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

raj15767-May-09 23:04

opc communication [modified]

7-May-09 23:04

thanks Stuart Dootson
now problem is solved

lucan funani7-May-09 21:16

lucan funani

7-May-09 21:16

Hallo! I am desperatly in need of examples of a source code that shows the opc(ole for process control)communication written in c++

modified on Friday, May 8, 2009 3:54 AM

Problem in Image Displaying in a VC++ Application

Shiv Murti Pal7-May-09 21:08

Shiv Murti Pal

7-May-09 21:08

Hi all,
I have an Application in which i am recovering Images from some devices.
now i want to display these image in vc++ application in such manner that when i recover an image then i save this image in a "Temp" folder, then i need to display this image into any list ctrl and then delete it, again i recover a image i save it it and display it and so on but i dont have any idea how to display image like this .
please help

thanking you

Re: Problem in Image Displaying in a VC++ Application

Taran97-May-09 22:47

Taran9

7-May-09 22:47

Refer [^]

Re: Problem in Image Displaying in a VC++ Application

Hamid_RT7-May-09 23:17

Hamid_RT

7-May-09 23:17

You can use of CImage class for save and display images/you can use of a ImageList for clitctrl for show these images on the list for make a folder you can use of CreateDirectory.

Of one Essence is the human race
thus has Creation put the base
One Limb impacted is sufficient
For all Others to feel the Mace
(Saadi )

Setup and deployment project Shortcut creating problem

Ranojay7-May-09 18:53

Re: Setup and deployment project Shortcut creating problem

7-May-09 18:53

Hi
Facing a problem friends.... plz help

I have a windows application with several executable and Dll's, and I am trying to make an installer to packge them all together and generate a Setup program.
For this I am using Setup and Deployment project of MSVC 2005. The Installer I am making is working perfectly except It cannot create a desktop shortcut Icon and add a shortcut to the users program menu.
The project has an option to select the short cut, but it only allows you to select the folder where the shorcut is and not the executable file for which you want to make the shortcut

How do I select the executable file for which I want to make adesktop short cut and Icon ?

Confused | :confused:

Thanx in advance
Plz Help

Madhu Nair7-May-09 19:31

Madhu Nair

7-May-09 19:31

Ranojay wrote:
How do I select the executable file for which I want to make a desktop short cut and Icon ?

By all means click on any such folder, you may see exes and other stuff!
If you can't find any in Application Folder, first select your exes and dlls to File System of Setup project. Then do the following steps.

1. Open File System
2. Select User's Desktop
3. Left click on left pane
4. Click on Create Shortcut ...
5. Look in : File System on Target Machine
you can see some folders listed as
Application Folder
System Folder etc
Click on the folder.
6. Select the EXE for shortcut.

Re: Setup and deployment project Shortcut creating problem

Ranojay7-May-09 21:16

Re: Setup and deployment project Shortcut creating problem

7-May-09 21:16

Thanks a lot friend.....can u be more specific.. I can do the steps u have mentioned but not these steps

5. Look in : File System on Target Machine
you can see some folders listed as
Application Folder
System Folder etc
Click on the folder.
6. Select the EXE for shortcut

In my case, after clicking on the create shortcut ... I see the shortcut and the aproperty window... where I cannot select any file as executable...It only gives you the option to browse through folders. I mean I have the shortcut but how do I make it link to the executable file.

I am using MSVC 2005

thanks again

Madhu Nair7-May-09 22:54

Madhu Nair

7-May-09 22:54

Ranojay wrote:
I see the shortcut and the aproperty window... where I cannot select any file as executable.

Let me confirm your actions;

You clicked on User's Desktop icon at the left pane/splitter window of File System tab, to pop-up a submenu and clicked on Create Shortcut on User's Desktop. The result was a new entry, named something like Shortcut to User's Desktop on the right pane/splitter. Is that right ?

If so, you just set the Target property of the new shortcut with your desired file name. (No need to specify the folder) - any way am not that much sure about this way. I will give you another fool proof way.

Just click User's Desktop, the right pane might be empty now. Click on the right pane so that you get a pop-menu like the one you seen in the previous steps. Select Create New Shortcut , the result will be a File Open Dialog (Step 5 on previous post) and continue the other steps which I described in previous post. Thumbs Up | :thumbsup:

If this one doesn't worked, tell me your personal e-mail id, I will send the screen shots. (I don't know whether I can upload a zip file to Codeproject)

Re: Setup and deployment project Shortcut creating problem

Ranojay7-May-09 23:50

Re: Setup and deployment project Shortcut creating problem

7-May-09 23:50

It works but ... The Icon cannot launch the executable,
actually I have a "Bin" folder under application folder where I keep the Binaries... I can select the executable from it..but in the runtime it does'nt serve the purpose

and all the file stays even after uninstalltion ... how to deal with that ....

here is my email id sen_ranojay@email.com any suggestion and help invited

thanks a lot
Smile | :)

Madhu Nair8-May-09 0:02

Madhu Nair

8-May-09 0:02

Ranojay wrote:
I can select the executable from it..but in the runtime it does'nt serve the purpose

You can select the exes but they are not installed ?

Ranojay wrote:
and all the file stays even after uninstalltion ... how to deal with that ....

How can you un-install the files which you failed to install ?

Re: Setup and deployment project Shortcut creating problem

Ranojay8-May-09 1:06